WebStorm 10.0.0 Help

Validating Web Content Files

On-the-fly validation is available for all Web content files and is performed as you edit the file.
WebStorm checks well-formedness, that is, detects various violations of syntax requirements, such as unclosed tags, wrong end-tag name,
duplicate tags, unresolved links, etc. All encountered errors are highlighted in the editor.

However, this form of code validation is rather soft, that is, not all requirements are taken into
account.

Full validation involves structure validation in addition to well-formedness check.
Full validation is available for files that are
associated with an XSD (XML Schema Definition) Schema
or contain a Data Type Definition (DTD).
WebStorm checks whether the structure of your XML file complies with the structure defined in the corresponding DTD or Schema.

Check results are provided as a Message View.

To run full validation on an XML file

Open the desired XML file in the editor, or just select it in the Project tool window.